Fluoride is a natural mineral that helps protect teeth from decay. It works by strengthening tooth enamel, making it more resistant to acids produced by bacteria in the mouth. Many communities add fluoride to their drinking water to promote dental health, and it is also found in toothpaste and mouth rinses. While fluoride is beneficial for oral health, it's important to use it in moderation. Too much fluoride can lead to a condition called dental fluorosis, which can cause discoloration of teeth. Regular dental check-ups and following guidelines for fluoride use can help maintain a healthy smile while avoiding potential issues.